1241888

Information

• Patent Grant
• 1241888

• References
• Source

• Patent Number

  1,241,888

• Date Filed

  Not available

• Date Issued

  Tuesday, October 2, 1917
  107 years ago

• CPC

  • G08B13/1436 - with motion detection
  • Y10S200/18 - Gravity
  • Y10S200/29 - Ball

• US Classifications

  • 340 - Communications: electrical
  • 200 - Electricity: circuit makers and breakers